Bug 918943 - Duplicate symbol errors linking WebRTC when using the 10.9 SDK with --disable-optimize. r=ethanhugg
Bug 922807. Always draw images with OVER. r=roc

There's no reason I can see to draw them with SOURCE. SOURCE is slower with the
Azure wrapper (see FillAzure()). It is also slow with cairo when we have a
clip.

--HG--
extra : rebase_source : 5c92c09a20699213ef90fad35ae8309f5ca88979